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23.
generally found on extremly fat people, its a huge sagging boob, or a belly roll or rolls and other things that fit in this description above. when whalelike people walk around, these items apear to (flap), due to air resistance and gravity, much as a birds wings flap or a whale flipper flip and/or flap. sometimes these things all flap/flip at once. this could be called a fat man's disco. amazingly, u get all this action just from walking!
that man just walked across the street, but it looked like he was flipping/flapping/rolling because all the flaps and flips made it look like he was dancing, unintensionally. When he made a turn to the left, all his flaps and rolls made him look as though he had a superpower of turning into tornadoes or spining around while walking straight
by slapapig September 27, 2003
 
1.
Labia majora and minora surrounding the exterior of the vagina.
"That babe I did last night had some big flaps."
by x January 22, 2003
 
2.
a) Aerodynamic devices found at the trailing edges of aircraft wings, used to augment lift at a lower speed during takeoff and landing.
b) The meaty lips you love to nibble on when you go muff diving
a) Flaps down 15 degrees check!

b) Hmmm pull on my flaps honey uhhh pull em ooooohhhh pull em!
by Hugh G Rection September 19, 2003
 
3.
(N) A whore. Derived from the region of the vagina called the labia.

The term flap is mostly used to describe any slut, skank, bimbo, man/whore, player, skeez, etc.

Recently, however, the term may describe a social event or gathering.

It can be followed by a series of adjectives including, but not limited to: loose, big, little, stinky, sticky, pink, gross, etc.

(Adj) Flappy

(Adv) Flappily
"Do you see Marie over there excessively kissing her new boyfriend. That woman is quite the flap."

"Yes, he began flirting with me many times today. That guy is totally a flap!"

"Oh Em Gee. Nobody is attending this social gathering. This party is such a flap."
by Jay Jay Cool Whip October 30, 2009
 
4.
Flaps are a part of womens genitila
Get ya flaps out
Lets see your flappies
Shes got well nice flaps
by Nogwardo February 24, 2008
 
5.
They can either keep mud off your car, or envelope your knob.
What's the difference between Mud Men & Mud Women. Mud Flaps!
by jadio u no August 14, 2003
 
6.
A 'Flap' is the name derived for a woman who you wouldn't necessarily 'go out with' or 'date' but you'd definitely have sex with.
"She's definitely a flap!"

"I don't think she's like that fit, but she's a flap"

"Her eyes don't really do it for me, she must be a flap"
by Bowms and Buns February 22, 2013
 
7.
Fucks Like A Porn Star
That chick FLAPS.
by G-RAT99 June 30, 2010